.header .col {
    background-color:lightgrey;
}

.col {
    border: solid 1px grey;
    border-bottom-style: none;
    border-right-style: none;
}

.col:last-child {
    border-right: solid 1px grey;
}

.row:last-child .col {
    border-bottom: solid 1px grey;
}

.row:nth-child(odd){ 
    background-color: #99ff99;
}